Source Documents
These are the council documents used to build the ICC calculator. If a link is broken, the document may have moved on the council website.
Calculation Methodology
Design event: 10-year (10% AEP)
Method: Site-Specific Design
Current Code of Practice for Land Development (2016) applies. A joint Code of Practice with Southland District Council is under development.
Design Requirements
- 2016 Code of Practice compliance
- Joint CoP with Southland DC under consultation
Submission
Required Documents
- Stormwater design report
- Engineering plans
Contact
Last verified: April 2026 · NZ Detention Tank Calculator